I've run into a problem with lazy loading on a Linux system when trying to install the Matrix package (version 0.995-16) which didn't happen with version 0.995-2. The problem is not with a x86_64 system: it's a 32 bit machine, the exact description I don't have right now (R-2.3.1). The message looks like this: Error in match.call(fmatch, fcall) : unused argument(s) (x ...) In addition: There were 12 warnings (use warnings() to see them) Error: unable to load R code in package 'Matrix' Execution halted ERROR: lazy loading failed for package 'Matrix' I even tried with the --no-lazy switch but that only gave me a message about being deprecated but otherwise the results were identical. What do I need to do to get more information about what is making that match.call message? The warnings() message is of no use once R has exited. I suspect it has something to do with warnings about NULL environments being deprecated, because I've not tracked down all instances of them, and the newer Matrix package is more particular about such things. Finding what is producing the problem with match.call might help me work out where the NULL environment messages are coming from and that would be an added bonus. TIA -- ~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~. ___ Patrick Connolly {~._.~} Great minds discuss ideas _( Y )_ Middle minds discuss events (:_~*~_:) Small minds discuss people (_)-(_) ..... Anon ~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.~.